JPH0763196B2 - Embedded sound generator - Google Patents

Description

The present invention relates to a sounding device that can be embedded in a wall surface, for example, a chime.

A chime that can be embedded and mounted is well known, but as shown in FIG. 1, the exposed portion A1 and the portion A2 embedded in the switch box D have substantially the same size as the container A0.
In the exposed portion, the plate frame B and the decorative plate C cover the opening F of the wall surface E.
G is a mounting bracket. Therefore, the exposed portion and the embedded portion of the cross-sectional area of the container A0 are the same, and the chime equipped with the chime sound generating means for striking the acoustic plate with the striking block driven by electromagnetic force is downsized. Difficult, JISC
Among the switch boxes specified in 8336, there is a drawback that the size does not fit in the so-called single switch box. However, in the market, the switch box for one switch is much easier to obtain than the switch box for two switch, the price is low, and the size of the opening in the wall is small at the time of construction. Box construction is easier to do.

Also, because the chime is embedded in the wall of the living room, the size exposed from the wall is small, and the lower the exposed height, the better the furniture fits in the room.
Also in this respect, the conventional embedded chime is not satisfactory.

An object of the present invention is to provide an embedded chime in which the above-mentioned drawbacks are improved, and to reduce the portion embedded in the wall surface and the thickness dimension of the portion exposed to the wall surface. The first purpose is to provide an embedded chime which is easy to install and has a low cost.

Hereinafter, the present invention will be described in detail according to an embodiment thereof.

In FIG. 3, reference numeral 1 denotes an embedded chime of the present invention, and the body 2, the cover 3, and the decorative plate 4 constitute a container. This container constitutes an exposed portion of the body 2 above the plane plate 21, the cover 3, and the decorative plate 4 exposed from the wall surface. Reference numeral 5 is an electronic component that constitutes an electronic circuit 7 that drives a speaker 6 that is an electroacoustic conversion means.
・ It is a printed board to which is soldered. Reference numeral 9 denotes an insulating plate attached to the back surface of the body 2, which is a plate material for insulating a wire connection portion between the commercial power supply terminal and an extremely low voltage (DC6V or so) terminal. Insert and fix the plate in the slit-shaped recess.

The body 2 has a flat surface portion 21 having substantially the same size as a flash plate for wiring equipment specified in JIS C8316, and has a lower protruding portion 22 which forms a lower empty space in the central portion. In the portion 21, a mounting screw through hole 23, scissors metal fitting engaging notches 24, 24, a small projection 25 that engages with an engaging piece 31 of the cover 3,
25, and a peripheral protrusion 26. 27a and 27b are terminals. Incidentally, 28 is a rib for preventing deformation.

Reference numeral 11 is a voltage drop means and a transformer which is an embodiment, and a space 13 in which the lower chamber of the body 2 is partitioned by a partition wall 12.
To store. As another embodiment of the voltage drop means 11, an electronic circuit may be used as shown in FIG. Reference numeral 29 is a partition that separates the power supply terminal 27a and the push button switch connection terminal 27b.

The cover 3 is provided with a sound output hole for the speaker 6 including a plurality of slits 32, 32 at the central portion, and mounting screw holes 33, 33 are provided.
The same spacing L as the pair of mounting screw holes Da of the switch box
It is provided in. Reference numerals 31, 31 are engaging pieces that engage with the small projections 25, 25 of the body 2. 34 and 34 are engaging protrusions 4 of the decorative plate 4.
1 is an engaging recess for engaging. Reference numeral 42 is a notch into which the convex portion 35 forming the sound output hole portion of the cover 3 is fitted.

The printed board 5 is provided with a hole 51 through which the back surface portion 61 of the speaker 6 penetrates, and holes 52 and 52 through which the cylindrical portion 36 forming the mounting screw hole of the cover 3 penetrates to form an electronic circuit for driving the speaker 6. The electronic components that are used are soldered. In FIGS. 4 to 6, 27 is a terminal screw and 27c is a wire insertion hole.

Next, the electronic circuit will be described with reference to FIG. AC100V is applied between the power supply terminals 27a and 27a, and the voltage drop means 11 supplies AC5.8V.
Step down to V, and then step down to DC1.5V with circuit 11a. 27b,
27b and 27b are terminals for connecting the push button switches 53 and 54.
Since the push button switch is mounted at a position away from the chime 1, for example, at the entrance, light emitting diodes are combined to provide the light emitting elements 53a and 54a, and the light is turned off only when the manual operation switches 53b and 54b are operated. Transistor Tr3,
Tr4 is always in a conducting state, and is in a non-conducting state only when the push button switches 53 and 54 are operated to change the input terminals 15 and 17 of the IC from the high (H) level to the low (L) level. This IC
Applies VDD to the terminal 1, uses the terminal 18 as a ground terminal, and the terminals 10 to 12 are connection terminals of the component 55 that determines the oscillation cycle for the clock oscillation circuit. Terminals 13 and 14 are connection terminals of capacitors C1 and C2 for creating an attenuation waveform. As shown in FIG. 8, instead of the voltage drop means 11, a transistor circuit 56 is used, and 10 to 20 V AC is input to the voltage drop circuit 1.
You may make it connect to both ends of the capacitor C0 of 1a.

Of the electronic components 8, 8, ... Soldered to the printed board 5,
If the height is large, for example, the printed board 5 has a notch 5a.
Is provided, the electronic component 8a (see FIG. 3) is mounted in the notch, and the terminals of the electronic component 8a are soldered to the printed board 5. Further, although it is a relatively small electronic component like the electronic component 8b, when the height dimension is large, it is soldered in the lateral direction as shown in FIG.

Further, as shown in the cross-sectional view, there is no positional relationship that the center of the speaker 6 and the center of the voltage drop means, for example, the transformer 11 can be offset and mounted, and the vertical dimension is short and a sufficient insulation distance can be secured. Is configured.

Then, the voltage drop means 11 of the body 2 and the terminal 27 are attached, the speaker 6 and the printed board 5 are attached to the cover 3,
The engagement piece 31 of the cover 3 is engaged with the body 2. In this state, the wall surface is opened, and the switch box is attached using the attachment screws. In this case, the opening of the wall surface is covered by the flat surface of the body 2. After that, the decorative plate 4 is mounted on the cover 3 and attached. Then, by operating the push button switches 53 and 54 connected to the terminal 27b, the transistor Tr3 or Tr4 is made non-conductive, and the input terminal 15 or 17 of the IC is changed from the high (H) level to the low (L) level. , The electric signals that make up the melody are output from the terminals 5 and 6 of the IC, and converted into sound by the speaker 6. The output converted into sound by the speaker 6 is output to the room through the sound output hole of the cover 3.

As described above, according to the present invention, the exposed portion provided with the electroacoustic converting means 6 and the vacant chamber in which the printed board 5 to which the electronic component 8 constituting the electronic circuit for driving the electroacoustic converting means 6 is attached is mounted. And an embedding portion having a lower empty space for mounting the voltage drop means 11 and the electric wire connecting means to form a container,
When this container is attached to an embedded switch box with a wall opening, the embedded portion is stored in the switch box,
The exposed part is exposed on the wall surface so as to cover the wall surface opening, and the exposed part of the container is provided with a sound output hole for outputting the sound emitted from the electroacoustic conversion means 6 to the outside of the container. Mounting screw hole for mounting equipment in box Da
Since the embedded sounding device is provided with a pair of mounting screw through holes at the same intervals as the above, the sounding device main body is downsized, the exposed portion is thin, and the embedded portion is 1 It will also be possible to store it in the switch box for ke. This causes the center of the electro-acoustic conversion means 6 and the center of the transformer 11 which is the voltage drop means to be deviated, so that the lower part of the electro-acoustic conversion means is housed in the lower chamber, and the electronic parts are mounted on the printed board 5. It can be made smaller and thinner by mounting it in the notch and mounting it so that the center of the printed board 5 in the plate thickness direction coincides with the center of the electronic component.

Further, the intervals of the mounting screw holes are adjusted to the intervals of the mounting screw screw holes Da for mounting the switch box device, the sizes of the body 2 and the cover 3 are adjusted to the size of the flash plate for the indoor wiring device, and the outside of the bottom surface of the body 2 is adjusted. Since the insulating plate can be attached between the power supply connection terminal and the push button switch connection terminal, the installation work is extremely simple.

[Brief description of drawings]

1 and 2 are views showing a conventional example of the present invention, in which FIG. 1 is a perspective view and FIG. 2 is a sectional view. 3 to 8 are drawings for explaining an embodiment of the present invention. FIG. 3 is an exploded perspective view, FIG. 4 is a bottom view, FIG. 5 is a partial sectional view, and FIG. 6 is a sectional view. FIG. 7 and FIG. 8 are electric circuit diagrams. 1: Embedded chime, 2: Body, 3: Cover, 4: Decorative plate, 5: Printed board, 6: Electro-acoustic conversion means, 9: Insulation board, 1
1: It is a voltage drop means.

Claims (3)

[Claims] 1. An exposed portion provided with an electroacoustic conversion means 6 and a vacant chamber in which a printed board 5 having an electronic component 8 constituting an electronic circuit for driving the electroacoustic conversion means 6 is mounted, and a voltage drop. A container is formed by the means 11 and an embedding part having a lower empty space for mounting the electric wire connecting means, and when the container is attached to an embedding switch box with a wall opening, the embedding part is inside the switch box. The container is housed and is exposed on the wall surface so that the exposed part covers the wall surface opening, and the exposed part of the container is provided with a sound output hole for outputting the sound emitted from the electroacoustic conversion means 6 to the outside of the container. An embedded sounding device in which a pair of mounting screw through holes are provided in the container at the same intervals as the mounting screw holes Da for mounting the switch box device. 2. The electroacoustic conversion means 6 and the voltage drop means 11 are eccentric to each other, and the lower part of the electroacoustic conversion means 6 can be housed in a lower chamber. The embedded sounding device according to claim 1. 3. The size of the exposed portion of the container is approximately the same as the size of the flash plate for indoor wiring equipment, and the distance L between the mounting screw through holes is the distance between the mounting screw holes Da for mounting the equipment of one switch box. The embedded sounding device according to claim 1 or 2, characterized in that: